Data center power fail causes grid spike – ON.Energy offers fix
A fallen power line caused 3 GW of data centers to disconnect, flickering lights across the region.
A fallen power line outside Washington DC triggered a cascade of data center disconnections on the PJM grid this week. Within 30 seconds, 3.1 GW of load vanished as data centers switched to backup power, causing voltage to spike from Northern Virginia to Chicago. Lights flickered across the region, and it took 11 minutes for the grid to stabilize. PJM, the largest U.S. grid operator serving 67 million customers, saw a peak surplus of 3.49 GW. The incident mirrors one from two years ago and underscores the fragility of grids hosting massive concentrations of data centers.
Experts call it a canary in the coal mine. The root cause: data centers react nearly simultaneously to grid disturbances, amplifying the problem. ON.Energy has developed an uninterruptible power supply for entire data center campuses, using batteries and power conversion equipment to present a consistent, well-behaved load to the grid. The system can absorb voltage dips by charging batteries or dispatch power when demand spikes, preventing disconnections. It also enables smooth scaling of AI workloads without grid disruption.
- 3.1 GW of data center load disappeared in 30 seconds after a single power line failure, causing voltage spikes across PJM's grid.
- The grid took 11 minutes to stabilize, with lights flickering from Northern Virginia to Chicago.
- ON.Energy's campus-wide UPS hides data center load behind batteries, allowing it to absorb fluctuations and avoid simultaneous disconnections.
Why It Matters
With data center concentration soaring, grid stability depends on preventing these synchronous load drops – ON.Energy’s tech offers a scalable fix.